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Heart|Natural|GIA

1.50ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6545440465

Certificate GIA 6545440465

Diamond specifications and retailer prices

From £2,782 GBP
As of November 6, 2026
Save £3,056 GBP (52%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £6,448 GBP at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545440465. Listed at 20 retailers as of November 4, 2026, with a 110% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6545440465
Dimensions6.84 × 7.83 × 4.84 mm
L/W Ratio1.14
Top View
6.84 mm7.83 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6545440465
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 61.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,956 GBP|Low: £2,773 GBP|High: £5,990 GBP|Avg: £3,724 GBP|-3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11£2,782 GBP
Retailer 1£2,956 GBP
Retailer 8£3,236 GBP
Retailer 7£3,319 GBP
Retailer 12£3,393 GBP
Retailer 3£3,563 GBP
Retailer 5£3,619 GBP
Retailer 10£3,728 GBP
Retailer 4£3,756 GBP
Retailer 2£3,825 GBP
Retailer 6£4,485 GBP
Retailer 9£5,839 GBP

35 data points across 12 retailers

20 retailers£2,782 GBP to £5,839 GBP

A
Cheapest Retailer
-
£2,782 GBP
A
Retailer 2
-
£2,956 GBP
View
B+
Retailer 3
-
£3,236 GBP
View
B+
Retailer 4
-
£3,319 GBP
View
B+
Retailer 5
-
£3,393 GBP
View
Final sale: no returns
B+
Retailer 6
-
£3,431 GBP
View
B+
Retailer 7
-
£3,433 GBP
View
Retailer 8
-
£3,563 GBP
View
Price last confirmed 12 days ago
B+
Retailer 9
-
£3,619 GBP
View
B+
Retailer 10
-
£3,621 GBP
View
Retailer 11
-
£3,701 GBP
View
Price last confirmed 22 days ago
Retailer 12
-
£3,701 GBP
View
Price last confirmed 22 days ago
Retailer 13
-
£3,701 GBP
View
Price last confirmed 20 days ago
B+
Retailer 14
-
£3,728 GBP
View
Retailer 15
-
£3,756 GBP
View
Price last confirmed 29 days ago
B+
Retailer 16
-
£3,825 GBP
View
Retailer 17
-
£4,270 GBP
View
Price last confirmed 19 days ago
B+
Retailer 18
-
£4,485 GBP
View
B
Retailer 19
-
£5,839 GBP
View
Most Expensive
NZ Jewellers
d6970c97-a6e6-4f22-a4fb-556d1d22f0ac · Oct 18
£6,448 GBP
$8,630 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from £2,782 GBPSave up to £3,056 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.50ct Heart
£2,782 GBP